Verb
have it in one (third-person singular simple present has it in one, present participle having it in one, simple past and past participle had it in one)
(informal, idiomatic) To be able to do something; to have the capacity to achieve something.
Do you have it in you to show any respect, politeness, patience, or, God forbid, an ounce of forbearance?
Almost every collection I do has 200 different references. I don't have two of the same coat, two of the same dress. I have it in one color, in one fabric. I've tried to adapt the culture of couture, and the know-how and the heritage, but I try to update it. Alber Elbaz